Vortigern was a 4,797 GRT combined train and RO-RO ferry which was built by Swan Hunter in 1969 for the British Railways Board. She was sold to Greece in 1988 and served until 2004 under the names Milos Express, Express Milos and Nisos Lemnos. She was renamed Limnos in 2004 and reflagged to Saint Vincent and the Grenadines. Limnos was scrapped in 2005.